Just like with Grand Theft Auto IV, Red Dead Redemption on PS3 has received a new patch to remove GameSpy support. In the case of Red Dead, online multiplayer gameplay remains unaffected, but Social Club website stat tracking and leaderboards, in-game Social Club services, and in-game multiplayer leaderboards have all been removed.

Patch 1.08 for Red Dead Redemption also fixes some exploits, which you can read about below in the full update notes:

General

Fixed a number of commonly-reported exploits, including rapid fire, map escapes, and invincibility through throw-canceling.

Added additional mod/cheat detection

Removed GameSpy Support, Which has These Effects

Removed in-game news.

Removed in-game leaderboards.

Removed in-game comparisons with other players.

Removed in-game Social Club.

Unlocked all Social Club Content, Which has These Effects

Marshals skin pack unlocked in multiplayer

Unlocked Social Club unlock bonuses for Story Mode: Deadly Assassin Outfit, Warhorse, and Golden Guns